The Thea sisters and the mystery at sea! (Thea Stilton graphic novel 6.)
by Stilton, Thea (Author), Savino, Francesco, 1986- (Author)
Series
Summary
Discovering that the turtles on Turtle Island have gone missing, the Thea Sisters spot environment-threatening drums of a strange oil and struggle to gather help before spotting a pair of turtles entering a mysterious underground cave. Full description
Series: Thea Stilton (Graphic novels)
The secret of Whale Island (Volume 1.)
Revenge of the Lizard Club (Volume 2.)
The treasure of the Viking ship (Volume 3.)
Catching the giant wave (Volume 4.)
The secret of the waterfall in the woods (Volume 5.)
The Thea sisters and the mystery at sea! (Volume 6.)
A song for the Thea sisters (Volume 7.)